Core shaft bearing slide



J1me 1967 E. J. KLACZKIEWICZ 3,326,488

CORE SHAFT BEARING SLIDE 2 Sheets-Sheet 1 Filed Nov. 26, 1965 wazf tzzqz'cz m' sV/TORNEYS June 20, 1967 E. J. KLACZKIEWICZ 3,326,488

CORE SHAFT BEARING SLIDE Filed Nov. 26, 1965 2 Sheets-$heet INVENTOR.

United States Patent 3,326,488 CORE SHAFT BEARING SLIDE Edward J. Klaczkiewicz, Wilmington, Del., assignor t0 Beloit Eastern Corporation, Downingtown, Pa., a corporation of Delaware Filed Nov. 26, 1965, Ser. No. 509,830 9 Claims. (Cl. 242-66) This invention relates to improvements in drum winders for winding webs of paper and the like into rolls and more particularly relates to an improved form of clamping support for the core shaft for the roll of paper.

A principal object of the present invention is to provide a new and improved bearing clamp for the core shaft of a drum winder, arranged with a view toward utmost simplicity in construction and positiveness in operation.

Another object of the invention is to provide a simplified form of core shaft bearing support biased into an open position and closed by power by an efficient and novel form of self-locking closing mechanism.

A further object of the invention is to provide an improved bearing support and clamp for the core shaft of a drum Winder having a pivoted cap with fluid pressure operated means for moving the cap into a closed position, in which a self-locking drive connection is provided from the fluid pressure operated means to the cap positively locking the cap in a closed position upon the release of pressure from the fluid pressure operated means.

A further object of the invention is to provide improved bearing supports and clamps for the ends of a core shaft of a drum winder in which each support and clamp has' a pivoted cap closed by fluid pressure operated means and moved by spring biasing means into an open position, upon the retraction of the fluid pressure operated means, in which the drive connection from the fluid operated means to the cap is a self-locking cam and follower connection locking the cap in a closed position and retaining said cap in a closed position in cases of loss of power.

These and other objects of the invention will appear from time to time as the following specification proceeds and with reference to the accompanying drawings wherem:

FIGURE 1 is a view in side elevation of a core shaft bearing slide constructed in accordance with the principles of the present invention with the frame for the drum winder and support for the bearing clamp shown in phantom, and showing the bearing clamp in a closed position;

FIGURE 2 is a view similar to FIGURE 1, but showing the bearing clamp in its open position, with certain parts broken away;

FIGURE 3 is a fragmentary transverse sectional view taken substantially along line 1II-III of FIGURE 1;

FIGURE 4 is a fragmentary transverse sectional view taken substantially along line IV-IV of FIGURE 1; and

FIGURE 5 is a fragmentary plan view of the bearing clamp looking substantially along line V V of FIGURE 1, with the support arms for the bearing clamp broken away.

In the embodiment of the invention illustrated in the drawings, I have generally shown in phantom in FIG- URES 1 and 2, a drum winder including a pair of posts 11, 11 extending upwardly from a base 12 carrying bearing supports for a pair of spaced horizontally aligned winder rolls 13, 13 coacting with a roll of paper 14 (FIG- URE 1) to define winding nips therebetween. The posts 11, 11 have facing guide tracks 15, 15 for slides 16 having parallel spaced arms 17, 17 extending angularly downwardly and inwardly from the lower ends thereof. Each pair of arms 17 has a split bearing clamp 19 at the lower end thereof positioned by the arms 17, 17 with the axis of the bearing clamp in vertical alignment with a horizontal axis midway between the axes of the winder rolls 3,325,488 Patented June 20, 1967 13, 13. The bearing clamps form bearing supports for bearings (not shown) for opposite ends of a conventional winder shaft 20. The winder shaft 20 may be surrounded by a tubular shell (not shown) on which the web is wound.

The leading end of the paper web is threaded around the tubular shell (not shown) on the winder or core shaft 20 and suitably clamped to the shell. The rolls 13, 13 are then driven to rotate the core shaft and shell so that a roll of paper will build up on said shell in contact with the winder rolls 13, 13. As the roll of paper builds up on the winder shaft 20, the roll will ride on the nips between the winder rolls 13, 13, lifting the bearing clamps 19, 19 and the slides 16, 16 along the guides 15, 15.

The slides 16, 16 are lifted along the guides 15, 15 to relieve the weight of the paper built up on the winder shaft from the winder drums 13, 13, in a conventional manner which may include a chain (not shown) connected to a suitable connection 21 and connected with a counterweight (not shown) and afluid pressure cylinder (not shown), and no part of the present invention so not herein shown or described further.

Referring now in particular to the core shaft bearing clamps and slides, each slide as shown in FIGURES 1, 2, 3 and 4 is in the form of a casting or block 22, having converging guides 23 extending along opposite sides thereof for substantially the entire length of the slide. The converging guides 23 are shown as having angular guiding surfaces extending from shoulders 24, 24 on opposite sides thereof and flattened at the outer ends thereof to provide freely movable guides, guided for vertical movement along the guides 15, 15 in the associated post 11.

As shown in FIGURE 4 the lower end portion of the slide 16 is of a generally channel-like form having spaced legs 25, 25 having the arms 17, 17 formed integrally therewith and extending therefrom. The lower end portion of the slide also has an intermediate leg 27 parallel to the legs 25, 25, extending from the web of the slide in the direction of the legs 25, 25. A wear plate 29 extends along the leg 27 and forms an abutment for a follower roller 30, pivotally mounted in a clevis 31 on a pivot pin 32. The clevis 31 is on the lower end of a piston rod 33 extensible from a cylinder 36, The cylinder 36 may be an air or hydraulic cylinder, and is shown in FIGURE 3 as being mounted on a block 37 recessed within the block portion 22 of the slide 16 and secured thereto. Fluid pressure connections 39, 39 are provided to the head and piston rod ends of the cylinder 36. The fluid pressure connections may include flexible hoses draped to provide connections to the cylinder 36 for the full extent of travel of the slide 16. 1

Referring now in particular to the bearing clamps 19, each bearing clamp 19 includes a bottom portion 40 having a semi-cylindrical upwardly opening recess 41. As shown in FIGURES l and 2, the bottom portion 40 extends across the ends of the arms 17, 17 and is formed integrally therewith. The bottom portion 40 has upwardly facing plane surfaces 43 extending outwardly of and defining the upper margins of the semi-cylindrical recess 41 and terminating in the same inclined plane.

The bearing clamp also includes a cap 44 having a downwardly facing semi-cylindrical recess 45 formed therein, and completing the recess 41, to form a cylindrical clamping recess having a series of spaced clamping blocks 42 extending thereabout having clamping engagement with the bearing (not shown) for the core shaft 20. The cap 44 has a pair of spaced arms 45a extending therefrom toward the slide 16 between the arms 17, 17 and pivotally connected thereto on a transverse pivot pin 46.

A torsion spring 47 encircles the pivot pin 46 and has one end 48 extending downwardly behind an abutment 49, extending inwardly of an arm 17 of the support arms 17, 17. An opposite end 50 of the torsion spring 47 is recessed in the cap 44. The torsion spring 47 is so wound as to bias the bearing cap 44 into an open position.

The bearing cap 44 also has an actuating arm 51 extending from the top thereof over the pivot pin 46 and torsion spring 47 and downwardly therefrom and under the follower 30. The curved top surface of the arm 51 is formed on varying radii to form a cam 53 engaged by the follower 30 upon downward movement thereof as the piston rod 33 is extended from the cylinder 36, and closing the clamp by power. The camming surface 53 terminates into a relatively short flat locking surface 55, wedgingly engaged by the follower 30, upon continued downward movement of the follower as the clamp is closed. The spacing between the fiat locking surface 55 and the wear plate 29 is close enough to provide an interference fit with the follower 30 to positively lock the clamp in a closed position independently of pressure in the cylinder 36 as the piston rod 33 approaches the end of its clamp closing stroke. The flat locking surface 55 terminates into an upwardly facing generally hooked end portion 56 generally conforming to the form of the follower 30 when in its extended locking position.

It may be seen from the foregoing that the camming action and interference fit between the rectilinear surface 55 and the follower 30 positively locks the core shaft clamp in its closed position even in cases where fluid under pressure may be relieved from the head end of the cylinder 36, due to a power failure. Thus when it is desired to open the clamp, fluid under pressure is admitted to the piston rod end of the cylinder 36, to raise the clevis 32 and the follower 30 and accommodate the torsion spring 47 to open the clamp.

This clamping action and self-locking feature besides positively locking the cap in its closed position, regardless of whether the cylinder 36 is pressurized, also absorbs all operational forces tending to unlock the clamp and relieves the piston rod 33 and cylinder 36 from these operational forces.

It may further be seen that since the upper half of the clamp opens, the slide and clamp may be lowered prior to ejecting a wound roll of paper, and a new shaft may be received'in the clamps in a winding position and raised, before the two caps are locked, by the application of fluid under pressure to the head ends of the cylinders 36, 36.

While I have herein shown and described one form in which the invention may be embodied, it may readily be understood that various variations and modifications in the invention may be attained without departing from the spirit and scope of the novel concepts thereof.

I claim as my invention:

I 1. In a drum winder for winding webs of paper and the like into rolls,

a winder frame,

a horizontal core shaft,

a pair of winder rolls rotatably mounted on said frame on opposite sides of said core shaft and defining winding nips with the roll of paper on said core shaft,

bearing clamps for opposite ends of said core shaft guided for vertical movement along said frame and supporting said shaft for upward movement as the roll ofpaper increases in diameter,

said bearing clamps each including, a

an upwardly opening bearing box having a cap transversely pivoted thereto,

means biasing said cap into an open position,

power means moving said cap into a closed position,

said power means including a self-locking closing connection with said cap, locking said cap in closed position, upon the release of power from said power means.

2. The structure of claim 1, V

wherein a torsion spring coaxial with the pivotal axis of said cap is provided to open said cap upon the release of said self-locking closing connection by power.

3. The structure of claim 2,

wherein the self-locking closing connection includes .a cam and follower for closing said cap and reacting against said cap when in a fully closed position to lock said cap closed against its bias upon the release of power from said power means.

4. The structure of claim 1,

wherein the power means is a fluid pressure operated a cylinder having a piston rod extensible therefrom and having a follower on the end thereof cooperating with said cap to close and lock said cap into a closed position. 5. The structure of claim 1, wherein the power means is a fluid pressure operated cylinder having a piston rod extensible therefrom, wherein the self-locking closing connection includes,

a follower rectilinearly moved by said cylinder, and a cam connected with said cap and engaged by said follower, and camming said cap into a closed position upon rectilinear movement of said follower in a downward direction. 6. The structure of claim 5, wherein the pivotal mounting for said cap on said hearing box includes a transverse pivot pin spaced between the axis of the core shaft and said follower and disposed above the axis of said core shaft and beneath the axis of said follower, wherein the means biasing the cap into an open 'position comprises a torsion spring encircling said pivot pin and operatively connected between said bearing box and cap, and wherein said follower moves into interferring relation with respect to said cam, as said cap is moved into a closed position, to positively lock said cap in its closed position. 7. The structure of claim 1, wherein said bearing clamps are mounted on the lower ends of slides, slidably guided in said frame for vertical movement therealong, and are disposed eccentrically of said guides, wherein each slide has a pair of parallel spaced arms extending from the lower end thereof toward the space between said winder rolls, wherein the upwardly opening bearing box is mounted on the ends of said slides, wherein the cap has a portion extending toward said slide along said arms, a 1 wherein a transverse pivot pin pivotally mounts said cap to said arms, wherein a torsion spring extends about said shaft and biases said clamp into an open position, wherein the power means includes a rectilinearly movable power member, and wherein the self-locking closingconnection between said power member and said cap comprises a camming connection having camming cooperation with said cap. 8. The structure of claim 7, wherein the rectilinearly movable power member i a fluid pressure cylinder having a pistonrod extensible therefrom,

wherein a follower is rotatably mounted on the end of said piston rod for vertical movement toward and from said cylinder,

and wherein an arm extends from said cap and has a top camming surface engaged by said follower upon extensible movement of said follower with respect to said cylinder, and camming said cap into a closed locked position upon downward movement of said follower.

9. The structure of claim 8,

wherein a wear plate holds said follower and piston rod from lateral displacement with respect to said cylinder,

and wherein said camming surface terminates into a flat locking surface having an interferring fit with said follower, as said piston rod is in its fully extended position and said bearing cap is in its closed position, for positively locking said bearing cap closed independently of pressure in said cylinder.

6 References Cited UNITED STATES PATENTS FRANK J. COHEN, Primary Examiner. W. S. BURDEN, Assistant Examiner. 

1. IN A DRUM WINDER FOR WINDING WEBS OF PAPER AND THE LIKE INTO ROLLS, A WINDER FRAME, A HORIZONTAL CORE SHAFT, A PAIR OF WINDER ROLLS ROTATABLY MOUNTED ON SAID FRAME ON OPPOSITE SIDES OF SAID CORE SHAFT AND DEFINING WINDINGS NIPS WITH THE ROLL OF PAPER ON SAID CORE SHAFT, BEARING CLAMPS FOR OPPOSITE ENDS OF SAID CORE SHAFT GUIDED FOR VERTICAL MOVEMENT ALONG SAID FRAME AND SUPPORTING SAID SHAFT FOR UPWARD MOVEMENT AS THE ROLL OF PAPER INCREASES IN DIAMETER, SAID BEARING CLAMPS EACH INCLUDING, 